Tubing-machine.



A. BLEEGKER.

TUBING MACHINE.

APLIOATION FILED JAN. 19. 1914. 1,133,610. Patented Mar.30,1915.

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llllllllllllllllllli A. BLBEOKER. TUBING MACHINE. APPLICATION FILED JAN.19,1914. l y l 33,6 1 O. Patented Mar. 30, 19.15.

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course 'through 'the' machine.

UNITED STATES 4PATENT oinrIcE.,

ALBERT. BLEECKER, or EAEEERToN, c1110, Assieivon To THE POETAGE RUBBERl COMPANY, or BARBEETON, oHIo, A CORPORATION.

TUBING-MACHINE. i

i Specificationof Letters Patent.

Patenten Mar. so, i915.

Application led January 19, 1914. Serial N o. 812,903.

ltubing machines, and the improvement resides more particularly in a head section and certain associated parts for 4such machinas, all substantially as herein Vshown and described and more` particularly pointed out in the claims.

`The primary'object of the invention is to provide means for making a seamless rubber tube in a continuous manner and of lunlimited length, and a further object 1s embodied in the novel arrangement of parts.

whereby soap-stone (talc powder) is carrd into the interior of the tube and thence out again under close confinement. v

Another object is to Aprovide an interchangeable head section and yfixture for tubing machines now in use.4

In the accompanying drawings, AFigure 1 is aside elevation and sectional view on a 'regluced scale of a tubing'machine embodying my invention. 2 is a perspective view of the, core-supporting spider, and Figs; 3 and 4l are similar views of the core and its 1 removable extension. Fig. 5 is a sectional view of the machine lon line 5-5, Fig. 1, and enlarged as compared therewith. Figs. 6, 7 and 8 arev perspective views of the head section, die, and die-locking ring, respectively. Fig." 8 is a plain elevation of the inner face ofthe head section. l

The machine comprises apede'sta1l2 carrying 'a cylinder 3 'having'an inner bushing (1 whichis separatedfrom the walls of said cylinder'to provide aV chamber 5 for the circulation of steamer water whereby the rubber or othercompound may be maintained Vat a proper workable .temperature in' lts This j compound lis fed into the hopper- 6 at thethroat end of the machine 'and is forced forwardby a stock worm 7 rotatablvconfined within the bushing, and a' gear 8 and pinion 9 or other suitable means is used to rotate the stock'worm to producea powerful compression on the material at the point of delivery through the detachable head section 10. In some types of head sections in use provision is made for a compartment or chambers and the admission of steam or water thereinto to maintain the compound at a suitable working temperature and I may practice this commonmode of heating the compound at the delivery end of the machine or use an electrical heating appliance for the same- -purpose comprising aNheating coil inclosed within or surrounding the head section. The control of the electric heating current and uniform heating at any desired degree of temperature is readily obtained by suitablel switch and rheostat or resistance devices. y V1 vThe forward or delivery end of thel cyly inder has an annular flange 11 and the-head section 10 has an inner cross-slotted face 12l bolted upon said flange and clamping the rim 13 of acore-holdingmemb'er 14 between it and the.' flange'.v The radiating'spokes 15 of saidr holder 14 occupy the cross slots "or recesses 16 in the face of the head section 10 and lock said holder against. rotation, and the compound is forced by the stock-worm through the spaces between the spokes and forward into the gradually-contracted annular passage 17 surrounding the for wardly-extending round cylindrical hub 18 of the holder 14. The outer end of said hub is provided with a differential bore, and a round cylindrical core 19 is detachably secured to said hub by a 'screw-threaded stemv 20 projected within said bore. However,

an annular space 21 is left open between the hub and the core and a longitudinal opening 22 extends through the hub 18 from this space to a transverse opening 23 in one of the arms or spokes 15 of the holder 14 and the outer or inlet end o f opening 23` is con- 'T nected to a pipe24 leading to a supply of soapstone in powder form. A discharge pipe 24 for the powder is connected to a i suction or air pump -S-, see Fig. 5, arid this pipe is attached to the holder 14: atthe outer end of a second transversel passage 25 *in one of the other Aarms or spokes 'of the holder and which passage is extended axially lthrough the hub 18 and-communicates I with an axial through opening 26 in the core 19.l The outer diameter of this core determines the inner diametervof the tube to be -'formed, and the outer diameter and thicke rately centered relatively to the core by the aid of a series or radial set screws 31 in the outer ianged end of the head 10.

One or more valved connections 32 may be provided for head- 10 to permit an outow of the compound when starting the machine. When the compound is of the right consistency for proper working, this valved connection is closed and the compound is forced through the die opening under the powerful compression of the stock worm. A continuous application of soapstone is then essential to produce a perfect tube in a continuous manner and the soapstone necessary for this purpose is supplied to the interior of the tube 'T at the outlet end of the longitudinal openings 22 and where an annular chamber 33 is formed within the tube by the reduced neck 34 of the hollow core extension 35 which isl detachably screwed upon the front stem 36 of the core 19. Extension 35 `is lrelatively long and of slightly larger diameter than the core 19-and its forward end is rounded or tapered while its rear shouldered portion has a series of holes 37 opening into its hollow interior through which the talc.- powder is free to pass back through the hollow neck 34: and out of the communicating'outlet pasy sage 26in the center of the core 19. A continuous supply of talc powder is thus provided while a tube of any desired length is being made without such powder escaping and wasting and endangering the health o'f the occupants of the room. Tale powder is used as it possesses lubricating*v properties and has other qualities of value whereby a smooth and finished rubber tube or tire may be produced, but I may use other materials possessing lubricating properties or other qualities of value in producing a tube of rubber or other plastic compound.

The suction pump S provides a continuous feed of the talc powder into the annular space 33 between the core 19 and the enlarged portion of its extension 35, and the powder moves forwardly with the formed tube under the suction created by the pump. The eli'ect of this suction in a forward direction is also of advantage in feeding the formed tube forwardly, and the openings 37 in the extension are located more particularly at the front end of the annular space 33 to produce thedesired results to the best advantage. i

What I claim is:

1. In a tubing machine, a head section having a die and a core to make a tube, and

means to circulate talc-powder through the interior ofthe tube and back through the 2. In a tubing machine, a head section and means to produce a'tube, said means being Aprovided with inlet and outlet assages to circulate talc powde'r continuous ythrough the interior of the tube while it is being produced, and separate inlet and outlet connections for said passages.

3. In a tubing machine, a head section having tubeforming members mounted thereon, an extension for one of said members to close the interior of the finished tube in advance of said members, means to deliver a lubricating material into the interior of the formed tube rearwardlyof said extension, and means to discharge the surplus lubricating material from the interior of the formed tube rearwardly through one of said members.

4. In a tubing machine, a head section having a tubeforming member removably mounted thereon, a removable extension for. said member having a tube-closing portion, and -separate inlet and outlet passages. extending through said member for the continuous circulation of amaterial possessing lubricating properties through the interior of the formed tube rearwardly of the tubeclosing portion of saidextension.

5. In a tubing machine, a head 'section having 'a tube-forming core, and an extension therefor adapted to engage with the inner walls of the formed tube in advance of said core, and said parts having inlet and outlet passages for a circulating medium in open communication with the interior of the tube between said core and its extension.

6. In a tubing machine, a head section, a core-supporting member and a die ring detachably aiiixed within said section, a core having an elongated extension detachably secured to said member centrally within said die ring, means tointroduce a powder through the core into the tube, and means to withdraw the powder from the tube back through the core.

7. In a tubing machine, a. cylinder having a removable head section, a core-supporting member clamped between said cylinder and head section, a die ring fixed within said head section, a core secured at the front of said member centrally within said die ring, an extension for said core, said member and core and its extension having circulating passages to introduce a powder into the tube during formation thereof and provided with outlet passages for conveying the powder from the interior of the tube back through the core, and discharge means for the powder connected with said outlet passages.

8. In a tubing machine, a head section having a set of tube-forming members provided with circulating passages open to the exterior at separated points longitudinally thereof, in combination with a pump and pipe connections to feed a lubricating material through said passages and longitudinally through the interior of the tube in the direction of its travel and thence rearwardly through said core.

9. In a tubing machine, a head section, a member having spokes and a central hub and provided with assages extendin through said spokes amfhub, a core secure to the front end of said hub having openings extending therethrough and communicating with said passages, and an extension secured to said core having intake openings exteriorly and a return passage internally in open communication wlth sald core openmgs.

10. In a tubing machine, a head section having a clamping face provided with radial slots, a core, and a supporting member for said core having radial arms seated within the said slots.

In testimon whereof I alix my signature in presence o two witnesses.

ALBERT BLEECKER. Witnesses:

E'rnnL ENGLISH, G. H. Doom'rrrn. 

